Board Thread:DMC5 Spoilers/@comment-39313039-20190501062641/@comment-1164563-20190501142826

In the case of my theory, makes sense the mother is dead. Maybe she tried to find Vergil and ended up dead? At any rate, it would explain why Nero grew up an orphan: even if the mother just "moved on" from Vergil, she'd still raise the kid if she was alive, I'd imagine.

But this is really the foggiest part of this whole thing: there could've been other reasons why she would've left Nero at the orphanage and yet still be alive somehow, but we know exactly zero about how she was like. I can make up a convincing fiction here, but I will be building it upon speculation based of speculations, tbh, so I am not going to go much into this all unless you ask me.